Don't worry blesedone1, this is a common issue among all musicians, beginner to advanced. Unless you are born with some type of gift for music, the ear is one of the hardest things to teach how to develop it.
One thing that helped my ear get better (besides having the gift) was to play the progressions with my eyes closed, well w/out looking at the keys as I was playing. By taking away your eyes, this forces the other 2 senses (touch and hearing) to pick up the slack.
Another way is to record yourself playing the progressions, then play them back when u are away from the keyboad and see if u can identify them by ear alone.
As far as getting the key right, that's a lot of trial and error. Those of us who don't have perfect pitch use relative pitch. Play a note on the keyboard, judge whether the note u just played is higher or lower than your intended note, then adjust. Over time u get faster at it.
That's enough about the ear, let's deal with your stage fright issue. The way to overcome stage fright or freezing up is to do more of it. If u freeze in front of people, play in front of more and more people on a regular basis. This will force u to adapt to your situation and hopefully make u more comfortable the more u do it.
I wouldnt exactly say that, but i do think that a skilled musician should be able to find the key almost instantly once AT the board.
I agree with that.